Type-writing machine.



H. V. FENGLER.

TYPE WRITING MACHINE.

APPLICATION FILED JULY 24. 1914.

n N M N. W a a v. w i 4 w W M 7 m T m P N R 2 :8. 1 T m MNHHH HHH HHM HH N u. T m 2 J N I. W A P s a E 2 a M r M w A nnnnnnnnnvnn k m -w 1 m W N v. 1..., B 4 n r QM o 1 01 3 HERMANN V. FENGLER, OF PHILADELPHIA, PENNSYLVANIA, ASSIG-NOB TO REMING- TON TYPEWRITER GOMPAN Y, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Application filed July 24, 1914. Serial No. 852,814..

To all whom it may concern:

Be it known that I, HERMANN V. FEN- GLER, citizen of the United States, and resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

My present invention relates to line spacing mechanism for typewriting machines, and its principal object is to provide new and improved mechanism of the character specified, and more especially such mechanism wherein a wider variation in the spacing than is usual may be obtained.

the above and other ends my invention consists in the features of construction, combinations of devices, and arrangements of parts hereinafter described and particularly pointed out in the claims.

In the accompanying drawings which illustrate the preferred form of the invention,

Figure l is a fragmentary plan view, partly in section, of the carriage of a type- Writing machine embodying my invention.

Fig. 2 is a transverse sectional view taken on the plane indicated by the dotted line mcc in Fig. 1 and looking in the direction of the arrow at said line.

Fig. 3 is an enlarged fragmentary horizontal sectional view taken on a plane indicated by the dotted line y-y, in Fig. 2 and looking downward.

Fig. 4 is an enlarged fragmentary transverse sectional view taken on a plane indicated by the dotted line z2, in Fig. 1 and looking in the direction of the arrow at said line.

Fig. 5 is a detail face view of an element hereinafter referred to as a ratchet wheel or regulator.

The carriage, shown in Figs. 1, 2 and 3, is rectangular, comprising front and rear bars 1 and 2 connected by end bars 3 and 4,'and is suitably mounted in a typewriting machine of any desired construction. On the carriage is a rotary platen comprising a wooden core 5 and an outer sheath 6 of rubher, said platen being supported on an axle which may comprise two relatively movable parts .7 and 8, said axle bearing at the right in the end bar at and being provided outside cured to the axle, said hub portion bearing in an extension 12 projecting rearward from the front bar 1. The right-hand end of the platen may be provided with a suitable platen head 13 having a hub formed with a slot 13 which is slidably engaged by a in 8? on the shaft 8. At the left the platen as secured to it as by wood screws 14: a platen head 15 which is provided with crown gear teeth 16. The inner end of the hub 11 abuts said head 15, said .gear teeth providing a gear wheel of a diameter substantially equal to that of the platen and rigidly connected thereto. The construction is such that the platen axle 78 may be turned freely in its earings 12 and 4 to cause rotations of the platen 5, 6. Also said axle may be moved longitudinally toward the left in its bearings for a purpose hereinafter described and when thus moved may be retained in abnormal position by latching devices comprising a latch 17 provided with a finger piece 18 and pivoted at 19 on the end bar 4:, said latch being adapted to cooperate with a flange 2O fixed to the platen axle.

Line spacing movements are communicated to the platen by devices comprising a small roll 21 of rubber, compressed fiber or other suitable composition, said roll being adapted to cooperate frictionally with the outer face of the platen head 15. Said platen head may be faced with a suitable material, or roughened or otherwise prepared in the way found best to afford effective frictional contact with the roll 21 with a minimum of wear. Said roll is fixed on a sleeve 22 which bears loosely on a shouldered portion of a headed screw 23, said screw being threaded into a bracket 24 secured to the rear bar 2 by screws 25. A nut 26 locks the screw 23 on said bracket. Secured to the sleeve 22 in rear of the roll 21 so that itis rigid therewith is a pinion 27 of slightly smaller diameter than the roll 21, the difference in the drawing being somewhat exaggerated. Said pinion remains constantly in mesh with the crown gear 16, the purpose of the gear andpinion connection being to. prevent slippmg or overthrow taking place between'the roll 21 'and the platen head under a violent or face by screws 31. The inner face of the inside part 30 is formed with two diametrieal grooves 32 at right angles to each other, each half -of each groove being adapted during the course of a succession of line spacing operations to receive the roll 21 when the parts are at rest. As shown in Fig. 5 the screws 31 are preferably arranged equidistantfrom eachother and from the intervening grooves 32 with which they alternate. The outside part 29 is bored out to receive a headed shoulder screw 33, the head 34 of said screw being received in a counter-sink 35 in the inner face of said part 29. The construction is such that when the parts 29 and 30 are secured together by the screws 31, said parts turn together as a single piece on the screw 33. The depth of the counter-sink 35 is such as to afford lost motion of the disk 28 suflicient to permit it to be disengaged or separated from the roll 21 when said disk is pushed leftward along the screw 33, this movement being accomplished by the gear wheel 10 when the axle 78 is pushed leftward. The outer end of the screw 33 is reduced and threaded and is screwed into a threaded opening in a lug 36 formed on a traveling support, carrier or bracket 37 which is arranged inside the end bar 3 and is formed at its forward end portion with a screw thread 38. The threaded or screw portion 38 bears loosely in detachable journals 39 and 40. Screws 41 fix the journal 39 to the 'end bar 3, and the journal 40 is secured by screws 42 to the front bar 1. Between the journals and arranged in a bight 3* in the end bar 3 is a beveled gear wheel 43. Said gear wheel is of somewhat larger diameter than the gear wheel 10 which is adapted to mesh with it, although the two gear wheels are normally separated. The gear 43 is provided with a hub portion 44 which is formed with an internal thread that is engaged by the screw 38, and its length is such that it is confined loosely between the journals 39 and 40 so that endwise movement of the gear wheel 43 is prevented, although it may turn freely on and relatively to the screw 38. The construction is such that when the gear wheel 10 is moved leftward to mesh with the gear wheel 43 and subsequently rotated by turning movements applied to the finger wheel 9, rotary movements will be communicated to the gear wheel 43 which will co-act with the screw 38 to transmit lengthwise movements transversely of the platen to said screw and to the member or carrier 37 of which it is a part. The leftward movement of the gear wheel 10 above referred to is also effective to push the disk 28 leftward so that its inner face will be carried out of engagement with the periphery of the roll 21. This disengaging movement is resisted by a spring 45 coiled around the shouldered portion of the screw 33 and confined between said disk and a washer 46 that abuts against the lug 36. When leftward pressure is removed from said disk the spring 45 is effective to restore it to cotiperative engagement with the roll 21. Said roll is preferably slightly compressed to better transmit motion, and also that it may expand into one or another of the grooves 32 when at rest, insuring that the parts and platen are held or detained in adjusted positions. The rear portion of the carrier 37 is formed with a rightward extension 37" terminating in an upwardly and forwardly curved end portion 37 provided with a slot or kerf which receives and guides a line spacing pawl 47. This pawl is arranged in the fore and aft plane of the disk 28 and it terminates at its rear or lower end in a tooth 48 which is adapted to coiiperate with ratchet teeth 49 formed on the' periphery of said disk, which in efiect is a ratchet wheel. There are four of said ratchet teeth in the present instance. Said pawl is provided with lateral stop pins 50 and 51 which are adapted to cobperate respectively with the top and bottom of the end portion 37 to limit positively the strokes or actuating movements of said pawl and the actuator or lever by which it is controlled and consequent turning movements of said disk or ratchet wheel. The pawl is supported on and actuated by a line spacing lever 52 with which it is pivotally connected at 53, said lever being pivoted on a shoulder screw 54 secured in a lug 55 on the carrier 37. A washer 56 is arranged on said screw to the left of the lever 52, which is confined between said washer and the head of the screw 54. The pivot or screw 53 is threaded into a lug 52 on said lever,

the carrier 37 and of the pawl and ratchet devices and all of the other parts supported thereon and bodily movable therewith. By pushing toward the right the finger piece 57* with which said latch is provided the manner 5 marks or devices is formed on the upper face of the end bar 3. Cooperating with this scale is a movable indicating device mounted on the carrier. In the present instance this movable indicating device may 61 secured by screws 62 to the carrier 37 1 near its rear end, said strap being bent over the top, outer side and under side of the end bar 3, forming a U-guide which promotes the rigidity of the carrier 37 and steadies it both when at rest and during its movements of adjustment.

Normally the line spacing lever 52 is in its forward positionas shown by dotted lines RF in Fig. 2. When a line spacing operation is effected the lever is first pushed rearward to the full line position of Fig. 2 and the 5 pawl 47 is guided downward and forward by the guide end 37 until arrested by the stop pin 50 contacting'with the top of said end 37*, at which time the pawl tooth 48 will be engaged with the ratchet tooth 49 at the underside of the disk 28. Thereupon the lever 52 is pulled forward from the full line to the dotted line position in Fig. 2, the movement continuing until the parts are arrested by the contact of the stop pin 51 with the end or stop device 37'. This last movement of the lever acting through the pawl or actuating device communicates a quarter turn to the disk or driving member 28 sufficient to cause one of the grooves 32 in said disk to disengage from the roll 21 and the next groove 32 in rear of the previously engaged groove to engage with said roll. During this quarter turn of the disk it will operate frictionally on the roll 21, turning said roll on its axis and causing it '2; in turn to communicate turning movements to the platen. The pawl engages with the wheel or disk 28 from the beginning of the actuating stroke and continues so engaged until the end of the stroke. It will be understood that the extent of turning movement thus communicated to the platen will depend on the setting of the disk 28 with relationship to the roll 21. This setting may be varied so that a greater or less extent of rotary movement will be communicated to the platen, according as the roll 21 engages with the disk 28 farther from or nearer to the axis of said disk. Assuming that the parts are set as in Figs. 2 and 3, they are so proportioned and arranged that a line spacing movement communicated to the lever 52 will transmit to the platen a turning movement of an extent knowncommonly in the art as double spacing. If it is desired to vary this turning movement of the platen and to obtain, say, single spacing,

be the lower edge of a guide strap or bandthe operator first pushes the finger wheel 9 inward toward the left, thus moving the axle or shaft 7-8 longitudinally leftward, and locks the parts against accidental return by swinging the latch 17 into engagement with the flange 20. The resulting leftward movement of the gear wheel 10 causes it to mesh with the gear wheel 43 and at the same time acting against the disk 28 to disengage the same from the roll 21. Next the operator unlocks the gear wheel 43 by manipulating the finger piece 57 of the latch 57 and thereafter turns the finger wheel 9, communicating rotary movements to the gear wheel 10 and through the intermeshing gear wheel 43 to the screw 38 and carrier 37 of which said screw is a part. As a result the carrier is moved rearward transversely of the platen and this rearward movement results in a rearward bodily movement of the disk 28 which is carried by said carrier. tinued until the is brought into register with the indicating mark 1 on the scale 60. Thereupon the latch 57 is released, looking or setting the disk and associate parts in the new posi tion, and the latch 17 is swung leftward, releasing the platen axle and the gear wheel 10 allowing the disk 28 to be restored to be reengaged with the roll 21. As a result of the resetting of said disk such rengage- 1 ment will be nearer to the axis of said disk;

and in eflect there has been a relative movement of the friction wheels 28 and 21 radial of the wheel 28. Consequently, though the line spacing actuations of the lever 52 and consequent turning movements of said disk or wheel 28 are constant, the resulting movement transmitted to the roll 21 and through it to the platen will be less, and the platen will receive only a single unit of line space movement. By turning the finger wheel 9 without pushing it inward the platen may be turned slightly either forward or backward to give fractional spacing below or above the writing line.

It will be seenthat by the present invention means is afi'orded for communicating a constant actuating movement to the line spacing lever and for varying the resulting line spacing movement 'of the platen, this being accomplished by means which do not include the ordinary devices for varying the engagement between the pawl and ratchet members of the line spacing train. It will further be understood that the invention provides for obtaining a wide variation in the extents of line spacing movement, this being because of the fact that I am not restricted to such variations as are due to dif ferences between teeth of a ratchet wheel as is usually the case. For example, the wheel Such movement is con-' are I so

, parting from the invention. For example,

instead of first pushing the lever 52 rearward and then pulling it back again for actuating the line spacing mechanism, the said lever may be'normally maintained in the full line position of Fig. 2 by a spring of ordinary construction so that it will only be necessary to pull said lever forward to actuate the line spacing mechanism, after which on releasing the lever it will be restored to the full line position by its spring.

It will be observed that by my present invention there is provided a line spacing driving member for driving the platen in combination with means for driving said member which engages with it from the beginning of the actuating stroke, the construction being such that the platen is caused to turn as soon as movement of said driving member begins; that the driving member, in the present instance a line spacing ratchet wheel, has a constant or unvarying extent of line spacing movement; that connections between said ratchet wheel and said platen are provided in combination with means for varying the relationship of said connection to vary the line spacing movement of the platen; that the line spacing mechanism comprises two cooperating rotary members combined with means for varying their normal relationship to vary the extent of movement communicated by one of them to the other; that said members, in the present instance, are frictional wheels or rollers one having a groove in one of its fiat faces to receive the rounded or peripheral portions of the other or second roller; that said groove in the present instance is straight and that there are two of these grooves, at right angles to each other; that said second roller engages successively with grooved portions of the grooved roller; that the two friction rollers are normally engaged with each other so that as soon as one starts to move its movement is instantly communicated to the other; that the driven friction roll is pivotally supported and frictionally, engages with the ratchet wheel and with the platen; that the 'axis of said pivoted roll is at right angles to the axis of the platen and to said ratchet wheel; that the face of the ratchet wheel with which said pivoted roll engages is a flat surface that is rigid with the platen; and that said flat surface is rotary and is perpendicular to the axis about which it turns, that is, to the platen axis.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a platen and line spacing devices comprising a driving member, means for driving said member engaging therewith from the beginning of the actuating stroke, the platen being caused to turn as soon as movement of said driving member begins, and means for varying the effect of said driving member, as it operates, on said platen.

2. In a typewriting machine, the combination of a platen and line spacing devices comprising a driving member, an actuating device for driving said member, said actuating device engaging with said driving?" member from the beginning of the actuat- 35 ing stroke, the platen being caused to turn as soon as movement of said driving memb'er begins, and means for varying the normal relationship between said driving member and said platen to vary the extent of line spacing movement.

8. In a typewriting machine, the combination of a platen, a line space actuator, and frictional devices operative by said actuator for line spacing said platen, the platen being caused to turn as soon as movement of said frictional devices begins, said devices being variable in their effect one on the other to vary the extent of line spacing movement of said platen.

4. In a typewriting machine, the combination of a platen, a line space actuator having a constant throw, and frictional devices ,operative by said actuator for line spacing said platen, the platenbeing caused to turn as soon as movement of said frictional devices begins, said devices being variable to vary the extent of line spacing movement of said platen.

5. In a typewriting machine, the combination of a platen, a line spacing wheel, l means for giving said wheel an unvarying line spacing movement, and connections between said wheel and said platen for varying the extent of line spacing movement which the platen receives.

6. In a typewriting machine, the combination of a platen, a line spacing ratchet wheel, an actuator for giving said wheel an unvarying line spacing movement, connections between said ratchet wheel and said platen, and means for varying the relationship of said connections to vary the line spacing movement of said platen.

7 In a typewriting machine, the combination of a platen, two cooperating friction rollers, the face of one of said rollers co6pcrating with the periphery of the other, turning means operative on one of said rollers, and means for maintaining said rollers 130 earner in predetermined relationships so as to maintain the platen in adjusted positions.

8. In a typewriting machine, the combination of a platen, two friction rollers, the face of one of said rollers cooperating with the periphery of the other roller, said face being formed diametrically with a groove to receive said other roller, and turning means operative on one of said rollers.

9. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising two cooperating rotary members, and means for varying the normal relationship between said members to vary the extent of movement communicated by one to the other.

10. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising two cooperating friction wheels or rollers, one having a groove in one of its flat faces to receive the rounded or peripheral portions of the other.

11. In a typewriting machine, the combination of a platen, line spacing mechanism therefor comprising two cooperating friction wheels or rollers, one grooved to receive the other, and means for turning the grooved roller so as to cause the other roller to cooperatively engage successively with grooved portions of said grooved roller.

12. In a typewriting machine, the combination of a platen, line spacing mechanism therefor comprising two cooperating fric" tion wheels or rollers, one grooved to receive the other, means for turning the grooved roller so as to cause the other roller to cooperatively engage successively with grooved portions of said grooved roller, and means operative on said grooved roller for varying the extent of line spacing movements communicated to the platen.

13. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising two cooperating friction rollers, and means for varying the relationship between said rollers to vary the extent of line spacing movement communicated to the platen, one of said friction rollers having a constant line spacing movement.

14. In a typewritin machine, the combination of a platen, an line spacing mechanism therefor comprising two normally engaged friction rollers, and means for setting one of said rollers in varying relationship with the other to vary the extent of line spacing movement.

15. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising two cooperating rotary devices, and means for effecting a relative radial adjustment between said devices to vary the line spacing movement.

16. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising two cooperating friction wheels, and means for effecting a relative shifting of one of said wheels radially of the other.

17. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising a ratchet wheel, actuating means therefor, and a pivoted friction roll engaging with said ratchet wheel and with said platen, the axis of said roll being at right angles to the axes of both said ratchet wheel and said platen.

18. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising a ratchet wheel,- actuating means therefor, and a friction roll engaging with said ratchet wheel and with said platen, said ratchet wheel being provided with grooves to accommodate said friction roll.

19. In a typewriting machine, the combination of a platen, and line spacin mechanism therefor comprising a pivote friction roll engaging with a fiat surface rigid with the platen, means for actuating said roll, and connections between said platen and said roll to prevent slipping.

20. In a typewriting machine, the combination of a platen, and line spacing mecha-' nism therefor comprising a friction 'rolll engaging with the platen, means for actuating said roll, and connections between said platen and said roll to prevent slipping, said connections comprising a pinion rigid with said roll and a gear rigid with said platen.

21.- In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising a line space wheel, and means for varying the setting of said wheel transversely of the platen to vary the line spacing movement of said platen.

22. In a typewriting machine, the combination of a platen, line spacing mechanism therefor comprising pawl and ratchet devices, and means for bodily moving said devices to vary their position so as to vary the extent of line-space turning movement of said platen.

23. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprising a line spacing ratchet wheel having a constant throw, means for moving said ratchet wheel bodily transversely of the platen, and means forfixing the bodily position of said ratchet wheel after readjustment.

2 1. In a typewriting machine, the combination of a platen, and line spacing mechanism therefor comprisin a line spaciiig ratchet wheel, means or moving said ratchet wheel bodily transversely of the platen, and means comprising a hand controlled detent for fixing the bodily position of said ratchet wheel.

. carrier bein mounted on said platen frame,

and means 'or variably setting said carrier on said platen frame.

26. In a typewriting machine, the combination of a platen frame; a platen thereon; and line spacing mechanism comprising a line spacing wheel, and means for varying the relationship of said wheel with sai platen, said means comprising a carrier on which said wheel is rotatably mounted, said carrier being mounted on said platen frame, and means for variably setting said carrier on said platen frame, said setting means comprisin a screw on said carrier, and a gear whee engaging said screw and having a fixed path of rotation.

27. In a typewriting machine, the combination of a platen, a platen frame, line spacing mechanism comprising a regulator, a carrier for said regulator mounted on said platen frame, means operative by turning the platen for moving said carrier and adjusting said regulator, and a scale on the platen frame for cooperation with said carrier.

nation of a platen, two co-acting line spacing wheels, hand operated means for turning one of said wheels to transmit line spacing movement through the other of said 28. Ina typewriting machine, the combi-" said line spacing wheel, said train compris-.

ing a device mounted and controlled by the platen axle, said device being also operative to temporarily disconnect said wheel from said platen during adjusting operations.

31. In a typewriting machine, the combination of a platen, pawl and ratchet devices having a constant throw and efiective throughout the entire throw to communicate turning movement to the platen, and means operative by turning the platen to vary the effect of said pawl and ratchet devices on said platen.

32. In a typewriting machine,- the combination of a rotary platen, a line spacing wheel, a carrier on which said wheel is rotatably supported, a friction roll normally engaged both by the platen and by said wheel, and means foradjusting said carrier comprising a device mounted on and movable by theplaten axle, said device being also operative to disconnect said wheel from said friction roll.

Signed at Philadelphia, in the county of Philadelphia, and State of Pennsylvania, this 22 day of July A. D. 1914;.

HERMANN V. FENGIIER. 

